how computer viruses spread?

I would like to welcome you computer

virus did you know first computer virus

was developed in 1971 it was called

creeper system fun fact it was filling

up the harddrive until a computer could

not operate any further this virus was

created by BBN technologies in the u.s.

in order to combat the creeper American

computer programmer Ray Tomlinson

developed the Reaper computer virus self

replicates spread right to memory post

intercept worm stealth data self

modifies what are viruses a computer

virus is a type of computer program that

when executed replicates itself by

modifying other computer programs and

inserting its own coma when this

replication succeeds the affected areas

are then said to be infected with a

computer virus viruses are generally

made for illegal purposes people create

viruses for various reasons ranging from

mild pranks to malicious destruction

malfunctioning and computers caused by

infected by virus 57% others 43% how

virus is spread 5 most common ways by

which computer virus spreads 1 opening

attachments or links from unknown or

spoofed emails this is one of the most

common ways of getting infected with a

virus or ransomware emails are spoofed

to look legitimate and contain an

attachment or link that will infect your

computer when clicked on these spoofed

emails are crafted so well these days

that even a seasoned professional can be

thrown off guard if not careful make

sure you pay attention to the details

before you open or click on anything to

downloading software from malicious

sites when your computer gets infected

with a virus it's common for someone to

think that it might not be a trusted

website it's a common misconception that

viruses only come from inappropriate or

problematic websites but viruses are a

danger everywhere on the Internet

even if you are downloading software

from a trusted source there are still

traps that can infect your computer for

example the user wants to download the

Google Chrome browser and clicks on the

link the link provides the google chrome

download file which the user installs

successfully unbeknownst to the user the

download package was injected with a

virus and the computer is now infected

this problem actually occurs very often

three online advertisements malicious

online ads also known as malvert icing

is just another way your computer can

get a virus without any realization or

traceable evidence criminals often place

teen ads on trusted websites and leave

them in place for a while to gain

credibility after some time passes they

put a malicious code in the ad that

infects your computer when clicked on

for social media

people are generally more relaxed about

clicking on links published on social

media sites and links shared by their

contacts did you know there was a virus

spreading on Facebook that infected

thousands of people's computers this

particular virus spread through a video

that required a special software plug-in

so the user could watch the virus

captured and recorded passwords used to

log into your computer five unpatched

software another way you can put your

computer at risk of a virus infection is

through unpatched software security

holes unknown to software maker or

antivirus vendors are also known as

zero-day vulnerabilities it exploits

that stem from security holes effects

software companies small and large

including the likes of Microsoft Apple

and Google did you know during March

2013 Oracle released emergency patches

to Java a popular plug-in used to view

content on browsers and applications

because of a vulnerability that allowed

hackers to exploit computers without

minimal barriers of entry